"Let's meet at the place where it all began." The true plot is revealed as Takuru travels to the Hikariwo. There he eets the other person behind the series of brutal killings.  But a deeper mystery lurks in the background: what Serika is telling him doesn't make sense, and he's convinced that as horrible as the story is, there's more to it than even he knows.
There's nothing else that's this much fun.
لا يوجد شيء أكثر منه تسلية
Es gibt einfach nichts anderes,
das so viel Spaß macht!
No hay nada más divertido que eso.
No hay nada más divertido que eso.
Y a rien au monde d’aussi excitant.
Non esiste nulla di altrettanto divertente!
Não há nada tão 
divertido quanto isso.